Drive attachment.



3 SHEETS SHEET L Patented Dec. 17, 1918.

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DRIVE ATTACHMENT. APPLICATION FILED MAR. I'z. IeIa.-

3 SHEETS-SHEET 2.

dttoznelzo Patented Den. 17, 1918.

H. P. SUHL.

DRIVE ATTACHMENT. APPLICATION FILED MAH. I2. |918.

3 SHEETS-SHEET 3.

Patented Dec. 1T, 1918.

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HERBERT P. SUHL, 0F KISSIMMEE, FLORIDA.

DRIVE ATTACHMENT.

Specification of Letters Patent.

1,288,271. Patented Dec. 17, 1918.

Application filed March 12. 1918` Serial No. 221,982.

'ment for automobiles, one of its objects' becludes parallel axles 1 and 2 each having a diiferential casing 3. In the drawings the differentials have not been illustrated in full but only one gear 4 of each differential has been shown. Bearing members 5 are extended toward each other from the respective casings 5 and are bolted or otherwise secured to the respective ends of a gear casing 6 which is supported betweenV the axles.V r1he ing to provide means whereby a four wheel gear casing is preferably formed of connectvehicle having two drive wheels can be coned sections and the various parts are braced verted into a siX wheel vehicle having four by rearwardly converging braces 7' secured drive wheels, the four drive wheels being arat their forward ends to the end portions of ranged close together thus to perform the the front axle 1 and at their rear ends to the duty of two drive wheels, produce a vehicle rear portion of the gear case, another pair which will ride easier than one with but twb of braces being attached to the end portions drive wheels, and increase the ground fricof the rear axle 2 and converging forwardly tion and carrying capacity. and attached to the front portion of the gear A further object is to provide an attachcase. These last named braces, which are ment of this character which can be applied readily and whichis strong and durable, it gear case while the braces 7 are secured to being especially designed for use upon the the top of the case. rlhis provides 'a strong well known Ford automobile, although it and durable connection between the parts. can also be employed in connection with Extendingylongitudinally within the case machines of other makes. l

With the foregoing and other objects in bers 5is a shaft 10 provided at its ends with view which will appear as lthe description f gears 11 which mesh with the annular gears proceeds, the invention consists of certain#y of the diiferentials, as shown. Fixedly senovel details of construction and combinacuredto the shaft 10 and housed in the case tions of parts which will be'hereinafter 6" are gears 12, 13 and 14, the distance bemore fully described and pointed out in the tween Athe gears 12 and 13 being much claim, it being understood that variousl `greater than the distance betweenthe gears changes may be made in the arrangement 13 and 14. Another shaft'l is journaled in and proportions of parts within the scope the top portion of the case 6 and extends of the claim vwithout departing from the forwardly through the front differential cas spirit or sacrificing any of the advantages ing 3 and is connected by a universal joint of the invention. 16. to the 'transmission shaft 17 of the veln the accompanying drawings the prehicle. That portion of the shaft 15 within ferred form of the invention has been shown. the gear case is preferably angular in cross In said drawings section'and slidably mounted on it is a sleeve Figure 1 is a view partly in side elevation 18 having gears 19, 20 and 21secured thereshown at 8 are secured to the bottom of the 6 and journaled in bearings 9 in the memand partly in sectionf'of a motor vehicle to. A grooved flange or collar 22 is formed having the present improvements' applied on the sleeve and is engaged by a forked arm formed at oneend of a sliding rod 23,

thereto. l l

as shown at 24. The rod extends forwardly Fig. 2 isa plan view of the attachment,

the ground engaging wheels and the ends of the axles being removed.

Fig. 3 is a central vertical section through the gear ease of the attachment. Y

Fig. 4 is' a section on line'4-4, Fig. 3. Fig. 5 is a section on line 5 5, Fig.4 3. Referring to the figures by charactersof reference, A/designates the chassis of a mofrom `the gear case and is connected by a universal joint'25 to an operating rod 26 which can be connected to a foot lever 27 tor vehicle to the rear portion of which is parent'that by shifting the gears 19, 20 and secured the drive attachmentv constituting 21 so as to bring them into mesh with their the present invention.- This attachment inrespective gears on the shaft 10 the speed .of the vehicle can be controlled. ln every instance motion is transmitted to the shaft l0 and, through the gears 11 to the two differentials so that both pairs of drive wheels will vbe uniformly driven and the ground friction of the vehicle willbe greatly increased with a correspondingly increased carrying capacity.

Importance is attached to the means em- 10 ployed for connecting the two axles of the attachment for the reason that the two axles of the attachment are thus held against all relative movement except vertically.

lVhat is claimed iS:-

A four wheel drive attachment for motor vehicles including parallel axles each containing drive mechanism including a clifferential, va gear case interposed 'between and supported by the axlesa pair of braces connected to eac-h axle, the braces of one pairim ,bottom'of the gear case at the remote Aend thereof, a. shaft and gear connection between the diiierentials and journaled within the gear case, a drive shaft journaled in said case, and change speed mechanism for transmitting motion from the drive 'shaft to the said connection.

ln testimony that I claim the foregoing as my own, l have hereto aflixed my signature in the presence of two witnesses. l

HERBERT P. SUI-lL.

Witnesses:

Roon?. Donn, Bass F. Mosntnr. 

